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Last spring, my colleague Hui He blogged about then-new vehicle taxes in India. She argued that the increase in excise taxes on bigger passenger cars was a welcome step toward disincentivizing the...The Indian government's decision to phase out diesel subsidies is good as far as it goes, but it doesn't go as far as it could.

An important question when estimating the indirect land use change emissions from biodiesel feedstocks is whether vegetable oils replace each other in the market, so that increased demand for one may...

Beijing’s recent episode of off-the-charts-bad air quality provoked a remarkable level of worldwide attention. The haze enveloping many Chinese cities, including not only Beijing but also other large...One culprit behind the deadly air quality in some of China's biggest cities has been receiving comparatively little scrutiny: air pollution from ships.

The basic CO2 data used in the development of the EU cost curves is derived from simulation modeling performed by Ricardo inc. This paper summarizes how the data developed by Ricardo was processed to...

This paper discusses the impacts of new vehicle mass reduction data on CO2 benefit and cost curves for EU light-duty vehicles in the 2020–2025 timeframe. This paper is the third in a series, with the...

Over the weekend, numerous global news sources reported on the record-breaking concentrations of fine particles—PM2.5—in Beijing, and the health issues that come along with them. Several sources (e.g...Acute, local pollution spikes are dangerous and unpleasant for those living through them, but they are just a part of the global pollution problem. Two recent reports highlight broader health and...

As Beijing continues to struggle with severely elevated air pollution levels this week, domestic and international media have kept a strong spotlight on China's air quality. On Friday, the New York...Air pollution is a regional problem, requiring widespread, deep, and permanent emissions cuts. Implementing stringent emission reduction policies will mean confronting entrenched state-owned...

[This is a Chinese-language version of my earlier post here.]
过去的一周，在恶劣的天气条件下，北京和中、东部地区很多城市都经历了严重的空气污染。数个空气质量监测点都出现PM2.5爆表的情况。这种前所未有的严重污染引发了国内外媒体的广泛关注和报道，很多市民也纷纷通过微博表达了对恶劣空气质量的不满。值得注意的是，...Chinese-language translation of the previous post.

Only 15–20 percent of the energy in fuels is used to drive a car; the remainder passes unused into the car’s surroundings as waste heat or other losses. Thanks to advanced technologies, these losses...

Over the past weekend, poor meteorological conditions contributed to a severe accumulation of air pollution in Beijing and hundreds of other cities in northern and eastern China. The extreme...Until China takes steps toward reducing emissions, poor air quality and occasional "crazy bad" episodes will continue.